package thread;

public class SyncDemo {
    public static void main(String[] args) {
        Table table=new Table();
        Thread t1=new Thread("甲"){
            @Override
            public void run() {
                while (true){
                    int bean=table.getBeans();
                    Thread.yield();
                    System.out.println(getName()+":"+bean);
                }
            }
        };
        Thread t2=new Thread("乙"){
            @Override
            public void run() {
                while (true){
                    int bean=table.getBeans();
                    Thread.yield();
                    System.out.println(getName()+":"+bean);
                }
            }
        };
        t1.start();
        t2.start();
    }
}
class Table{
    private int beans=20;
    public synchronized int getBeans(){
        if (beans==0){
            throw new RuntimeException("没有豆子了");
        }
        Thread.yield();
        return beans--;
    }
}
